Display Device Electrode Lattice Structure for Short Defect Prevention
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Solution Overview
Problem
Current display devices face challenges in simplifying the inspection process and preventing short defects between electrodes aligning light emitting elements, which complicates manufacturing and increases costs.
Innovation Solution
The display device incorporates a lattice structure formed by overlapping first and second extension areas on a substrate, with electrodes positioned to prevent short defects and simplify the inspection process, including a manufacturing method that etches the base electrode to create these extension areas and arranges light emitting elements between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If electrodes are positioned closely to align light emitting elements, then alignment precision is improved, but short defects between electrodes occur
Solution Approach 1:
The electrode structure is segmented into a first electrode and a second electrode with a separation area between them. The first extension area includes a separation area where the first electrode is not located, creating distinct segments that prevent short defects while maintaining alignment functionality through the lattice structure formed by overlapping extension areas.
Solution Approach 2:
The second extension area acts as an intermediary structure between the first electrode and second electrode. It provides a reference framework that enables precise alignment of light emitting elements without requiring the electrodes to be in direct contact, thus preventing short defects while maintaining manufacturing precision.
2Reliability
If complex electrode structures are used to prevent short defects, then reliability is improved, but device complexity increases
Solution Approach 1:
The extension areas serve multiple functions simultaneously: they provide structural reference for aligning light emitting elements, create separation zones to prevent short defects, and form a lattice structure that simplifies the overall electrode design. This multi-functionality reduces device complexity while maintaining reliability.
Solution Approach 2:
The first extension area and second extension area are merged to form a unified lattice structure that integrates alignment references and separation zones into a single coherent design. This merging simplifies the electrode structure by combining multiple functional elements into one integrated system rather than separate components.
3Ease of manufacture
If traditional inspection processes are used, then manufacturing costs are controlled, but inspection complexity increases
Solution Approach 1:
The lattice structure formed by overlapping extension areas creates distinct visual patterns that facilitate simplified inspection processes. The geometric arrangement provides inherent visual references that make it easier to detect alignment issues and defects during inspection, reducing inspection process complexity while maintaining manufacturing cost control.
Data Source
AI summary
According to one or more embodiments of the present disclosure, a display device including a first extension area and a second extension area, the display device including: a first electrode and a second electrode on a substrate and spaced from each other in a first direction; and a first light emitting element on the first electrode and the second electrode, wherein: the first extension area extends in the first direction and includes a separation area in which the first electrode is not located, and the second extension area extends in a second direction crossing the first direction, the second extension area being an area in which the first electrode and the second electrode are not located.